Adjustable window-fastener.



M. L. SILVERSTEIN.

ADJUSTABLE WINDOW FASTENER.

APPUCATION FILED MAR-29,1918- memaed Jan.14,1919.

till! MORRIS Ii. SILVERSTEIN, 0F METH'UEN, MASSACHUSETTS.

nnausranizn wrnnow-rasrnnnn.

Fasteners, of which the following is a specification.

This invention relates to new and useful improvements in adjustable window fasteners and the principal object of the invention is to provide means for locking the sash in any one of a plurality of positions.

Another object of the invention is to pro vide means for automatically locking the sash after the same has been raised slightly from a closed position.

The invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claim.

In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figure 1 shows the invention applied to a window.

Fig. 2 is a sectional view showing the sash locked in its lowest position.

Fig. 3 is a similar view with the sash locked in partly raised position.

Fig. 4 is a like view with the partly raised sash engaging the automatic locking means. Fig. 5 is a section on line 55 of Fig. A.

Fig. 6 is a view similar to Fig. A but showing the automatic locking means in inoperative position.

In these views the window frame is indicated at 1, the lower sash at 2, and the upper sash at 3. A indicates the well known type of sash lock located on the upper bar of the lower sash and which comprises the rotatable cam 5 which is adapted to engage a part carried by the upper sash. My inven tion relates to this part which is engaged by the said cam and it consists of a standard 6 provided with the upwardly curved slots 7 spaced apart and adapted to receive the cam 5 when said cam is placed in locking position. The lower end of said standard is bent at right angles to engage the lower bar of the upper sash and said end may be se- Specification of Letters Patent.

Patented Jan. it, rain.

rrat filed March as, rare. Serial no. season.

cured to the bar by screws or the like. T prefer to make said bent end of less width than the standard so as to leave a projection 8 at the end of the. standard which is sharpened and is adapted to be driven into the lower bar of the upper sash. After the projection is driven into place the bent end is secured to the lower bar. The upper end of the standard is bent twice at right angles, as shown at 9 so as to space the standard a certain distance from the central dividing strip 10 of the upper sash. The extreme end of the part 9 is secured to said strip by a screw or the like.

It will thus be seen that the cam 5 may be placed in engagement with thelowest slot to lock the sash in closed position, and if desired the lower sash may be partly raised, or the upper sash lowered so that the cam may engage with one of the other slots 7 so that the sash may be locked in partly opened position.

While T have shown the standard provided with three slots it will, of course, be understood that it may have any number of slots and it may be of any desired length.

As before stated T provide means for automatically locking the sash so that if a person should forget to lock the sash such means will prevent an unauthorized person from gaining access to the room by opening the sash. This means consists of a clip 11 pivoted to said standard in such a manner that a shoulder 12 on the clip will normally lie in the path of the look 4 even though the cam 5 is in inoperative position, as clearly shown in. Fig. l. This shoulder is formed by cutting a strip from the front edge of said clip at the lower part thereof and T may form an operating finger 13 adjacent said shoulder by bending the out part at right angles. A stop 14 is formed in the other edge of the clip by cutting the metal as before and bending the same at right angles so that said stop will engage the rear edge of the standard and thus limit the movement of the clip. As before stated the clip will be caused by gravity to assume a position where the shoulder is located in the path of the lock 4- so that after the sash is raised said lock will engage said shoulder and prevent further movement of the sash. The said clip may be easily swung out of the way of the sash, from the inside of the room.

It is thought from the foregoing description that the advantages and novel features ing a standard adapted to be secured to one 10 of my invention will be readily apparent. of the sashes and a pivoted clip on said I desire it to be understood that I may standard having a shoulder thereon, said make such changes in the construction and clip being caused by gravity to assume a 5 in the combination and arrangement of the position With its shoulder in the path of the several parts, provided that such changes other sash for limiting its upward move- 15 fall Within the scope of the appended claim. ment.

What I claim is In testimony whereof I afiix my signature.

A device of the class described, compris- MORRIS L. SILVERSTEIN.

Copies of this patent may be obtained for five cents each, by addressing the comminioner of Estate, Washington, D. 0. 

